Packaging bag having an anti-slip plastic layer

ABSTRACT

A packaging bag includes a plain woven plastic bag body having two opposite major walls facing each other to define an accommodation space, and at least one anti-slip plastic layer formed by thermo-coating on an outer surface of at least one of the major walls so as to provide a frictional force for preventing slippage of the bag body. The bag body is made of a material selected from the group consisting of polypropylene and polyethylene. The anti-slip plastic layer is made of a material selected from the group consisting of polypropylene, polyethylene, and polyvinyl chloride.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority of Taiwanese Application No. 098200231,filed on Jan. 8, 2009.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a packaging bag, more particularly to apackaging bag having an anti-slip plastic layer.

2. Description of the Related Art

Generally, goods for delivery are first packed in a plurality ofconventional packaging bags, after which the packaging bags are stackedone on top of the other in a warehouse or in a delivery truck. However,the packaging bags fall down easily from their stacked state eitherbecause they are not arranged neatly and orderly, or because of thevibrations produced by the moving vehicle. Hence, use of theconventional packaging bags is not only inconvenient, but also can posea danger.

SUMMARY OF THE INVENTION

Therefore, the object of the present invention is to provide a packagingbag that is capable of overcoming the aforementioned drawbacks of theprior art.

According to this invention, a packaging bag comprises a plain wovenplastic bag body having two opposite major walls facing each other todefine an accommodation space, and at least one anti-slip plastic layerformed by thermo-coating on an outer surface of at least one of themajor walls so as to provide a frictional force for preventing slippageof the bag body.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the present invention will becomeapparent in the following detailed description of the preferredembodiments of the invention, with reference to the accompanyingdrawings, in which:

FIG. 1 is a fragmentary perspective view of a packaging bag according tothe first preferred embodiment of this invention;

FIG. 2 is a sectional view of the first preferred embodiment;

FIG. 3 illustrates a plurality of the packaging bags of the presentinvention in a state stacked one on top of the other;

FIG. 4 is a sectional view of a packaging bag according to the secondpreferred embodiment of this invention;

FIG. 5 is a sectional view of a packaging bag according to the thirdpreferred embodiment of this invention; and

FIG. 6 is a fragmentary perspective view of a packaging bag according tothe fourth preferred embodiment of this invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Before the present invention is described in greater detail, it shouldbe noted that the same reference numerals have been used to denote likeelements throughout the specification.

Referring to FIGS. 1 and 2, a packaging bag 1 according to the firstpreferred embodiment of the present invention is shown to comprise a bagbody 11 and an anti-slip plastic layer 12.

The bag body 11 has two opposite major walls 13, 13′ facing each otherand defining an accommodation space 131, and has an opened end 14, and aclosed end 15 opposite to the opened end 14. In this embodiment, the bagbody 11 is a plain woven bag made from polypropylene. Alternatively, theplain woven bag may be made from polyethylene. The material of the plainwoven bag is not limited to the aforesaid disclosures.

In this embodiment, the anti-slip plastic layer 12 is formed bythermo-coating on an outer surface of the major wall 13 of the bag body11, extends longitudinally between the opened and closed ends 14, 15,and is made from polypropylene. Alternatively, the anti-slip plasticlayer 12 may be made from polyethylene or polyvinyl chloride, and is notlimited to the aforesaid disclosures.

Referring to FIG. 3, during a plurality of the packaging bags 1 arestacked for transport, through the presence of the anti-slip plasticlayers 12 on the outer surfaces of the major walls 13 of the bag bodies11 of the packaging bags 1, frictional contact among the bag bodies 11can be enhanced, so that falling over or slippage of the stackedpackaging bags 1 due to a rocking movement or vibrations can beeffectively minimized or prevented. Hence, the inconvenience of havingto re-stack the packaging bags 1 or the danger posed by the packagingbags 1 falling over can be largely reduced. Further, the effectivenessof the anti-slip plastic layer 12 cannot be easily lowered due tocontact with dirt.

Referring to FIG. 4, a packaging bag 1′ according to the secondpreferred embodiment of the present invention is shown to be similar tothe first preferred embodiment. However, in this embodiment, thepackaging bag 1′ further has another anti-slip plastic layer 12′ formedby thermo-coating on the outer surface of the other major wall 13′ ofthe bag body 11. During a stacking operation of the packaging bags 1′,there is no need to pay particular attention to the stacking directionof the bag bodies 11 of the packaging bags 1′ since the major walls 13,13′ of the bag bodies 11 are provided respectively with the anti-slipplastic layers 12, 12′. Hence, the advantages of the packaging bags 1′discussed above can be effectively further enhanced.

Referring to FIG. 5, a packaging bag 1″ according to the third preferredembodiment of the present invention is shown to be similar to the firstpreferred embodiment. However, in this embodiment, the anti-slip plasticlayer 12″ covers completely the outer surfaces of the major walls 13,13′ of the bag body 11. Advantages of the first preferred embodiment canbe similarly achieved using the third preferred embodiment. It should benoted that the anti-slip plastic layer 12″ may be configured as a nettedstructure that surrounds the outer surfaces of the major walls 13, 13′of the bag body 11.

Referring to FIG. 6, a packaging bag (1 a) according to the fourthpreferred embodiment of the present invention is shown to be similar tothe first preferred embodiment. However, in this embodiment, theanti-slip plastic layer (12 a) has an outer surface provided with aplurality of anti-slip protrusions 121 projecting outwardly therefrom.

Advantages of the first preferred embodiment can be similarly achievedusing the fourth preferred embodiment.

While the present invention has been described in connection with whatare considered the most practical and preferred embodiments, it isunderstood that this invention is not limited to the disclosedembodiments but is intended to cover various arrangements includedwithin the spirit and scope of the broadest interpretations andequivalent arrangements.

1. A packaging bag comprising: a plain woven plastic bag body having twoopposite major walls facing each other to define an accommodation space;and at least one anti-slip plastic layer formed by thermo-coating on anouter surface of at least one of said major walls so as to provide africtional force for preventing slippage of said bag body.
 2. Thepackaging bag of claim 1, wherein said bag body is made of a materialselected from the group consisting of polypropylene and polyethylene,and said anti-slip plastic layer is made of a material selected from thegroup consisting of polypropylene, polyethylene, and polyvinyl chloride.3. The packaging bag of claim 1, wherein said bag body further haslongitudinally opposite opened and closed ends, and said anti-slipplastic layer is elongated, and extends longitudinally between saidopened and closed ends of said bag body.
 4. The packaging bag of claim1, wherein said anti-slip plastic layer covers completely said outersurfaces of said major walls.
 5. The packaging bag of claim 1, whereinsaid anti-slip plastic layer has an outer surface provided with aplurality of anti-slip protrusions projecting outwardly therefrom.